On computing the evolution of temperature for materials under dynamic loading

Luscher, Darby Jon; Buechler, Miles Allen; Walters, David J.; Bolme, Cynthia Anne; Ramos, Kyle James

doi:10.1016/j.ijplas.2018.07.014

Title: On computing the evolution of temperature for materials under dynamic loading

Full Record
Other Related Research

Abstract

Modeling and simulation of the dynamic response of materials is important to many applications including the development of armor systems, understanding the safety of explosives, and assessing the crashworthiness of vehicles. Within such applications it is often critical to accurately compute the evolution of the temperature because it is a state variable that affects the kinetics of competing active processes within the material (e.g., dislocation motion, phase transformation, decomposition). Depending on the selection of an independent state variable, e.g. temperature or entropy, the approach for computing temperature is well understood based on the thermodynamic framework attributed to Coleman and Noll. However, different computational codes used for modeling the dynamic response of materials adopt different independent state variables. In this work, two thermodynamically consistent strategies for computing the temperature of a coupled thermodynamic state are compared and implemented into two different Lagrangian computational codes. The equivalence of these two approaches is established through the numerical solutions of several test problems. Finally, the implication of various approximations made to each of these approaches within the literature are assessed in the context of uniaxial stress conditions (split Hopkinson pressure bar experiments) and uniaxial strain conditions (plate impact experiments). Here, it is shown thatmore »« less

Authors:

^[1]; Buechler, Miles Allen ^[1];

^[1];

^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:: Tue Jul 24 00:00:00 EDT 2018

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1463559

Alternate Identifier(s):: OSTI ID: 1703208

Report Number(s):: LA-UR-18-21769
Journal ID: ISSN 0749-6419

Grant/Contract Number:: AC52-06NA25396; DR 20170029; DR 20180100

Resource Type:: Accepted Manuscript

Journal Name:: International Journal of Plasticity

Additional Journal Information:: Journal Volume: 111; Journal ID: ISSN 0749-6419

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; thermodynamics; plastic heating; shock physics; constitutive model; dynamic loading; continuum hydrocode; finite element

Citation Formats


                    Luscher, Darby Jon, Buechler, Miles Allen, Walters, David J., Bolme, Cynthia Anne, and Ramos, Kyle James. On computing the evolution of temperature for materials under dynamic loading.  United States: N. p., 2018. 
Web.  doi:10.1016/j.ijplas.2018.07.014.

Copy to clipboard


                    Luscher, Darby Jon, Buechler, Miles Allen, Walters, David J., Bolme, Cynthia Anne, & Ramos, Kyle James. On computing the evolution of temperature for materials under dynamic loading.  United States.  https://doi.org/10.1016/j.ijplas.2018.07.014

Copy to clipboard


                    Luscher, Darby Jon, Buechler, Miles Allen, Walters, David J., Bolme, Cynthia Anne, and Ramos, Kyle James. Tue .  
"On computing the evolution of temperature for materials under dynamic loading".  United States.  https://doi.org/10.1016/j.ijplas.2018.07.014.  https://www.osti.gov/servlets/purl/1463559.

Copy to clipboard


                    
@article{osti_1463559,

  title        = {On computing the evolution of temperature for materials under dynamic loading},

  author       = {Luscher, Darby Jon and Buechler, Miles Allen and Walters, David J. and Bolme, Cynthia Anne and Ramos, Kyle James},

  abstractNote = {Modeling and simulation of the dynamic response of materials is important to many applications including the development of armor systems, understanding the safety of explosives, and assessing the crashworthiness of vehicles. Within such applications it is often critical to accurately compute the evolution of the temperature because it is a state variable that affects the kinetics of competing active processes within the material (e.g., dislocation motion, phase transformation, decomposition). Depending on the selection of an independent state variable, e.g. temperature or entropy, the approach for computing temperature is well understood based on the thermodynamic framework attributed to Coleman and Noll. However, different computational codes used for modeling the dynamic response of materials adopt different independent state variables. In this work, two thermodynamically consistent strategies for computing the temperature of a coupled thermodynamic state are compared and implemented into two different Lagrangian computational codes. The equivalence of these two approaches is established through the numerical solutions of several test problems. Finally, the implication of various approximations made to each of these approaches within the literature are assessed in the context of uniaxial stress conditions (split Hopkinson pressure bar experiments) and uniaxial strain conditions (plate impact experiments). Here, it is shown that the temperature rate or energy partition approaches are equivalent when implemented in their complete forms, but that several common simplifying assumptions, that are warranted in the case of uniaxial stress, lead to significant errors in the resulting Hugoniot state for plate impact.},

  doi          = {10.1016/j.ijplas.2018.07.014},

  journal      = {International Journal of Plasticity},

  number       = ,

  volume       = 111,

  place        = {United States},

  year         = {Tue Jul 24 00:00:00 EDT 2018},

  month        = {Tue Jul 24 00:00:00 EDT 2018}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1016/j.ijplas.2018.07.014

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 17 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

High Strain Rate Compression Testing of Ceramics and Ceramic Composites.

Conference Blumenthal, W R

The compressive deformation and failure behavior of ceramics and ceramic-metal composites for armor applications has been studied as a function of strain rate at Los Alamos National Laboratory since the late 1980s. High strain rate ({approx}10{sup 3} s{sup -1}) uniaxial compression loading can be achieved using the Kolsky-split-Hopkinson pressure bar (SHPB) technique, but special methods must be used to obtain valid strength results. This paper reviews these methods and the limitations of the Kolsky-SHPB technique for this class of materials. The Kolsky-split-Hopkinson pressure bar (Kolsky-SHPB) technique was originally developed to characterize the mechanical behavior of ductile materials such as metalsmore »« less
https://doi.org/10.1002/9780470291276.ch11

Full Text Available
Plastic flow modeling in glassy polymers

Conference Clements, Brad

Glassy amorphous and semi-crystalline polymers exhibit strong rate, temperature, and pressure dependent polymeric yield. As a rule of thumb, in uniaxial compression experiments the yield stress increases with the loading rate and applied pressure, and decreases as the temperature increases. Moreover, by varying the loading state itself complex yield behavior can be observed. One example that illustrates this complexity is that most polymers in their glassy regimes (i.e., when the temperature is below their characteristic glass transition temperature) exhibit very pronounced yield in their uniaxial stress stress-strain response but very nebulous yield in their uniaxial strain response. In uniaxial compression,more »« less
Full Text Available
Effect of high strain rates on peak stress in a Zr-based bulk metallic glass

Journal Article Sunny, George ; Fuping, Yuan ; Prakash, Vikas ; ... - Journal of Applied Physics

The mechanical behavior of Zr{sub 41.25}Ti{sub 13.75}Cu{sub 12.5}Ni{sub 10}Be{sub 22.5} (LM-1) has been extensively characterized under quasistatic loading conditions; however, its mechanical behavior under dynamic loading conditions is currently not well understood. A Split-Hopkinson pressure bar (SHPB) and a single-stage gas gun are employed to characterize the mechanical behavior of LM-1 in the strain-rate regime of 10{sup 2}-10{sup 5}/s. The SHPB experiments are conducted with a tapered insert design to mitigate the effects of stress concentrations and preferential failure at the specimen-insert interface. The higher strain-rate plate-impact compression-and-shear experiments are conducted by impacting a thick tungsten carbide (WC) flyer platemore »« less
https://doi.org/10.1063/1.3009962
Parameterizations of Cloud Microphysics and Indirect Aerosol Effects

Technical Report Tao, Wei-Kuo

1. OVERVIEW Aerosols and especially their effect on clouds are one of the key components of the climate system and the hydrological cycle [Ramanathan et al., 2001]. Yet, the aerosol effect on clouds remains largely unknown and the processes involved not well understood. A recent report published by the National Academy of Science states "The greatest uncertainty about the aerosol climate forcing - indeed, the largest of all the uncertainties about global climate forcing - is probably the indirect effect of aerosols on clouds [NRC, 2001]." The aerosol effect on clouds is often categorized into the traditional "first indirect (i.e.,more »« less
https://doi.org/10.2172/1131481

Full Text Available
Aluminum Rayleigh Taylor Strength Measurements and Calculations

Conference Lindquist, M J ; Cavallo, R M ; Lorenz, K T ; ...

A traditional approach to the study of material strength has been revitalized at the Russian Federal Nuclear Center (VNIIEF). Rayleigh Taylor strength experiments have long been utilized to measure the material response of metals at high pressure and strain rates. A modulated (sinusoidal or sawtooth perturbation) surface is shocklessly (quasi-isentropically) accelerated by a high explosive (HE) driver, and radiography is used to measure the perturbation amplitude as a function of time. The Aluminum T-6061 targets are designed with several sets of two-dimensional sawtooth perturbations machined on the loading surface. The HE driver was designed to reach peak pressures in themore »« less
Full Text Available

Similar Records